She was just an ordinary girl who leads a normal life working in an office environment at a company. He on the other hand was a CEO of a company but disguised as an intern in his own company. What's his purpose/age

I've written 3 letters for you. With every single day passed, read only 1 letter each day. When you had read the last letter, that is when you could finally find me. Love, your namja

He was based in the US for at least a year for his career. Because of that, they had to postpone their marriage plans which he promised to marry her the year after he comes back. Will their love still be as strong even when they are far away from each other? Will he keep or break his promise?

Edited: He hide it from her. He didn't want to burden her. He thinks it is the right thing to do.  She believed his story. She was hurt and disappointed. She wanted to leave him.   Old:  Who rules the household after being married? The husband of course. Well, sort of. Not when he got someone like his wife who can tam